CN105034319B - Method for preventing cable or optical cable from being scratched - Google Patents
Method for preventing cable or optical cable from being scratched Download PDFInfo
- Publication number
- CN105034319B CN105034319B CN201510441550.1A CN201510441550A CN105034319B CN 105034319 B CN105034319 B CN 105034319B CN 201510441550 A CN201510441550 A CN 201510441550A CN 105034319 B CN105034319 B CN 105034319B
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- Prior art keywords
- screw rod
- cable
- head
- drainage screen
- extrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000003287 optical effect Effects 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000005299 abrasion Methods 0.000 claims description 3
- 230000009194 climbing Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000004438 eyesight Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract description 3
- 239000004703 cross-linked polyethylene Substances 0.000 abstract description 3
- 229920000098 polyolefin Polymers 0.000 abstract description 3
- 229910052736 halogen Inorganic materials 0.000 abstract description 2
- 150000002367 halogens Chemical class 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000004698 Polyethylene Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000004595 color masterbatch Substances 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/69—Filters or screens for the moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of cables and relates to a method for preventing a cable or optical cable from being scratched. The method is characterized by comprising the following steps of selection of a reasonable screw rod and a reasonable screw tube, selection of a handpiece and a mould, setting of the extrusion temperature, placement of multiple layers of filtering nets, setting of the rotation speed of the screw rod, and reasonable addition of materials. According to the method, the problem that outer sheaths of crosslinked polyethylene and non-halogen polyolefin cables or optical cables produced in the prior art are scratched is solved. The method has the beneficial technical effects that the investment is small; the method takes effect soon; produced cables are not scratched; the percent of pass of finished products is greatly increased; the cost of the products is further reduced; the requirements for materials are not so high.
Description
Technical field
The invention belongs to optical fiber cable, technical field of electric wires and cables, more particularly, to one kind cable or optical cable flower skin are prevented
Method.
Background technology
In order to meet the requirement for using, each cable enterprise can all produce crosslinked polyethylene（XLPE）And halogen-free polyolefin
(PO) cable or optical cable, the outermost layer for referring to cable or optical cable is above-mentioned material.Due to the particularity of this two classes material, therefore existing skill
The phenomenon of colored skin or variegated bar usually occurs in the production of art, this kind of cable outward appearance cannot pass through to check, therefore product waste product
Rate is very high, causes this kind of qualified product price commercially far above material cost price, have impact on its popularization and application.On
Colored skin phenomenon is stated, is all existed on the extruder of existing cable jacket 60,90 extruders, 120 extruders, at present without effectively solution
Certainly method.
The content of the invention
In order to solve the above problems, the purpose of the present invention is to disclose a kind of method for preventing cable or optical cable from spending skin；It is
Employ the following technical solutions to realize.
A kind of method for preventing cable or optical cable from spending skin, it is characterised in that it is realized using following measures：
The first step：Select rational screw rod and barrel：The screw rod for lacking block without eyesight appreciable wear is chosen, surface abrasion is selected
Barrel of the block full-size less than 0.3mm, it is ensured that have gap but gap to be not more than 0.5mm, spiral shell between screw flight and barrel
The compression ratio of bar is 2.0～2.5；The spiral groove depth of the screw rod of homogenizing zone L1 is 1～3mm, and the length of fluxing zone L2 is homogenizing zone
1.5～2.5 times of length, the length of feed zone L3 is 1.0～1.2 times that plastify segment length；
Second step：The selection of head and mould：The extruder head for selecting hand adjustment type extruder head or inner space larger；Choosing
Plsitive mold is selected, external mold inner wall size 0.1～0.3mm only bigger than internal model outer wall dimension is made；Make plastic extrusion pressure for 2～
4MPa；
3rd step：The setting of extrusion temperature：The head extrusion temperature of extruder is set as 130～140 DEG C；
4th step：Place drainage screen：Using four layers filtration, the 1st layer adopt mesh number for 100 mesh steel wire drainage screen, the 2nd layer
Adopt mesh number for 200 mesh steel wire drainage screen, the 3rd layer adopt mesh number for 250 mesh steel wire drainage screen, the 4th layer adopt mesh number for
The steel wire drainage screen of 100 mesh；
5th step：The rotating speed of setting screw rod：Before the clamp lock of the head that closes, the rotating speed of screw rod is set at 5～10 revs/min
Clock；After the clamp lock of head of closing, the rotating speed climbing speed of screw rod is set as 3～5 revs/min；
6th step：The addition of material：In extrusion, material adds several times, and 5 kilograms are less than every time.
A kind of method for preventing cable or optical cable from spending skin described above, it is characterised in that the screw rod is that BM types extrude spiral shell
Bar or PE extrusion screw rods.
The present invention have less investment, instant effect, production cable occur without colored skin, product qualified rate greatly improve, product
The Advantageous Effects such as cost further reduces, carve to material requirements no longer Ke.
Description of the drawings
Fig. 1 is the dimensional structure diagram of a section of the screw rod used in the present invention.
Specific embodiment
Ask for an interview Fig. 1, a kind of method for preventing cable or optical cable from spending skin, it is characterised in that it is realized using following measures
's：
The first step：Select rational screw rod and barrel：The screw rod for lacking block without eyesight appreciable wear is chosen, surface abrasion is selected
Barrel of the block full-size less than 0.3mm, it is ensured that have gap but gap to be not more than 0.5mm, spiral shell between screw flight and barrel
The compression ratio of bar is 2.0～2.5；The spiral groove depth of the screw rod of homogenizing zone L1 is 1～3mm, and the length of fluxing zone L2 is homogenizing zone
1.5～2.5 times of length, the length of feed zone L3 is 1.0～1.2 times that plastify segment length；
Second step：The selection of head and mould：The extruder head for selecting hand adjustment type extruder head or inner space larger；Choosing
Plsitive mold is selected, external mold inner wall size 0.1～0.3mm only bigger than internal model outer wall dimension is made；Make plastic extrusion pressure for 2～
4MPa；
3rd step：The setting of extrusion temperature：The head extrusion temperature of extruder is set as 130～140 DEG C；
4th step：Place drainage screen：Using four layers filtration, the 1st layer adopt mesh number for 100 mesh steel wire drainage screen, the 2nd layer
Adopt mesh number for 200 mesh steel wire drainage screen, the 3rd layer adopt mesh number for 250 mesh steel wire drainage screen, the 4th layer adopt mesh number for
The steel wire drainage screen of 100 mesh；
5th step：The rotating speed of setting screw rod：Before the clamp lock of the head that closes, the rotating speed of screw rod is set at 5～10 revs/min
Clock；After the clamp lock of head of closing, the rotating speed climbing speed of screw rod is set as 3～5 revs/min；
6th step：The addition of material：In extrusion, material adds several times, and 5 kilograms are less than every time.
A kind of method for preventing cable or optical cable from spending skin described above, it is characterised in that the screw rod is that BM types extrude spiral shell
Bar or PE extrusion screw rods.
A kind of method for preventing cable or optical cable from spending skin described above, it is characterised in that the fluxing zone has 30～40
Individual screw thread, and length is 500～800mm.
1st to the 4th metafiltration net described above, determines from the extrusion direction of extruder head, goes out near extruder head
It is the 4th metafiltration net at mouthful, is the 1st metafiltration net farthest away from extruder head exit, secondary is the 2nd metafiltration away from extruder head exit
Net, secondary close extruder head exit is the 3rd metafiltration net.
By above-mentioned measure, applicant have found suitable screw rod, spiral shell chamber, mould in manufacturing enterprise；Entrust as stated above
Support manufacturing enterprise is produced, and produces the twisted polyethylene cable and each 250 disk of halogen-free flame-retardant polyethylene cable of a diameter of 20mm,
Often disk length is 2.5 kilometers, the colored skin phenomenon of oversheath does not occur；After applicant is connected to the customer order of optical cable, still upper
State enterprise to be produced by above-mentioned measure, produce the disk of Africa GYFTZA53-72 cores optical cable 1000, often disk length is 4 kilometers,
Oversheath is low-smoke non-halogen flame-retardant polyethylene, and the colored skin phenomenon of oversheath does not occur yet；Therefore, above-mentioned measure is drastically increased
Product qualified rate, has prevented the colored skin phenomenon that two class materials occur in sheathing.
The solution of the problems referred to above, is mainly derived from applicant for the analysis of material, machine draws, the fire retardant in material
It is easily bad with color masterbatch blending when kneading in screw rod or filler ratio is mismatched and improper, cause to spend the generation of skin.
In above-mentioned measure, the shallow screw channel of homogenizing zone makes material have more backflows in screw rod, base material is preferably merged with color masterbatch
Together；Fluxing zone and enter the lengthening of disconnected section, base material is fully merged with color masterbatch.
Therefore, the present invention have less investment, instant effect, production cable occur without colored skin, product qualified rate greatly improve,
The Advantageous Effects such as product cost further reduces, carve to material requirements no longer Ke.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that the design of the present invention can be by other a variety of shapes
Formula is implemented to use, and they are also fallen within protection scope of the present invention.
Claims (3)
1. a kind of method for preventing cable or optical cable from spending skin, it is characterised in that it is realized using following measures：
The first step：Select rational screw rod and barrel：The screw rod for lacking block without eyesight appreciable wear is chosen, surface abrasion block is selected most
Barrel of the large scale less than 0.3mm, it is ensured that have gap but gap to be not more than 0.5mm between screw flight and barrel, screw rod
Compression ratio is 2.0～2.5；The spiral groove depth of the screw rod of homogenizing zone is 1～3mm, and the length of fluxing zone is the 1.5 of homogenizing segment length
～2.5 times, the length of feed zone is 1.0～1.2 times that plastify segment length；
Second step：The selection of head and mould：The extruder head for selecting hand adjustment type extruder head or inner space larger；Select to squeeze
Pressure type mould, makes external mold inner wall size 0.1～0.3mm only bigger than internal model outer wall dimension；Plastic extrusion pressure is set to be 2～4MPa；
3rd step：The setting of extrusion temperature：The head extrusion temperature of extruder is set as 130～140 DEG C；
4th step：Place drainage screen：Using four layers filtration, the 1st layer adopt mesh number for 100 mesh steel wire drainage screen, the 2nd layer employing
Mesh number is the steel wire drainage screen of 200 mesh, the 3rd layer adopt mesh number for 250 mesh steel wire drainage screen, the 4th layer adopts mesh number for 100 mesh
Steel wire drainage screen；
5th step：The rotating speed of setting screw rod：Before the clamp lock of the head that closes, the rotating speed of screw rod is set at 5～10 revs/min；Close
After the clamp lock of upper head, the rotating speed climbing speed of screw rod is set as 3～5 revs/min；
6th step：The addition of material：In extrusion, material adds several times, and 5 kilograms are less than every time.
2. a kind of method for preventing cable or optical cable from spending skin according to claim 1, it is characterised in that the screw rod is BM
Type extrusion screw rod or PE extrusion screw rods.
3. a kind of according to claim 1 or claim 2 prevents the method that cable or optical cable spend skin, it is characterised in that institute
Fluxing zone is stated with 30～40 screw threads, and length is 500～800mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510441550.1A CN105034319B (en) | 2015-07-26 | 2015-07-26 | Method for preventing cable or optical cable from being scratched |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510441550.1A CN105034319B (en) | 2015-07-26 | 2015-07-26 | Method for preventing cable or optical cable from being scratched |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105034319A CN105034319A (en) | 2015-11-11 |
| CN105034319B true CN105034319B (en) | 2017-04-12 |
Family
ID=54441565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510441550.1A Active CN105034319B (en) | 2015-07-26 | 2015-07-26 | Method for preventing cable or optical cable from being scratched |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105034319B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0752230A (en) * | 1993-08-18 | 1995-02-28 | Furukawa Electric Co Ltd:The | Two-stage extruding method and device |
| JPH08203358A (en) * | 1995-01-30 | 1996-08-09 | Showa Electric Wire & Cable Co Ltd | Method for extruding crosslinked-polyethylene admixture |
| GB9618926D0 (en) * | 1996-09-11 | 1996-10-23 | Bicc Plc | Cable-making process |
| CN102347109B (en) * | 2011-06-24 | 2013-04-17 | 四川明星电缆股份有限公司 | Manufacture method for low-voltage electric power cable used for nuclear power station |
-
2015
- 2015-07-26 CN CN201510441550.1A patent/CN105034319B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105034319A (en) | 2015-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Xianggen Inventor before: Yin Hong |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170310 Address after: No. 88 West Road Haian Industrial Park Haian County Jiangsu city Nantong province 226600 Applicant after: Nantong Mirante Electric Co.,Ltd. Address before: Yicheng Street South Village Yixing Jiangsu province 214206 city of Wuxi City, No. 144 room 404 Applicant before: Yin Hong |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CI01 | Publication of corrected invention patent application | ||
| CI01 | Publication of corrected invention patent application |
Correction item: Applicant|Address Correct: Nantong MiLanTe Electric Co., Ltd.|No. 88 West Road Haian Industrial Park Haian County Jiangsu city Nantong province 226600 False: Nantong milante Electric Co. Ltd.|No. 88 West Road Haian Industrial Park Haian County Jiangsu city Nantong province 226600 Number: 13 Volume: 33 |